Exhaust Gas Temperature Sensor 2
The computer detected a problem with the exhaust gas temperature sensor 2.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
Exhaust gas temperature sensor 2 is not providing valid readings, which can affect performance and emissions controls.
What the computer is actually seeing
The Engine Control Module (ECM) expects the exhaust gas temperature to be within a specific range. It monitors voltage signals from the sensor; when abnormal values are detected (e.g., below 0.2V or above 4.5V), it triggers this code.
What a healthy reading looks like
Exhaust gas temperature from sensor 2 should be around 600-900°F during normal operation; voltage output should be between 0.5V and 4.5V based on temperature.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check wiring and connectors leading to exhaust gas temperature sensor 2 for damage or corrosion. Decision: Are they okay? (If no, repair or replace.)
- 22. Measure the voltage output from the exhaust gas temperature sensor 2 while the engine is running. Expected range is 0.5V to 4.5V. Decision: Is the voltage within range? (If no, replace sensor.)
- 33. Inspect for exhaust leaks near the sensor that could affect temperature readings. Decision: Are there any leaks? (If yes, repair exhaust system.)
- 44. Clear the code and run the engine to see if the code returns. Decision: Does it come back? (If yes, replace sensor.)
Common causes
- Wiring issue (short or open circuit)
- Faulty exhaust gas temperature sensor 2
- Connector corrosion or damage
- Exhaust leaks near the sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; you can drive it but fix it soon to avoid emissions issues.
Will this code come back after I clear it?
If the underlying issue isn't fixed, yes, it will likely return.
Why does this code appear with other exhaust temperature codes?
Multiple codes can indicate a common wiring issue or failure of multiple sensors in the exhaust system.
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